Harry Potter and the Methods of Rationality

A book by Eliezer Yudkowsky.

In this alternative version of J.K. Rowling's famous tale, Petunia Evans marries the biochemist Michael Verres. The couple adopts her orphaned nephew. Christened "Harry James Potter-Evans-Verres," he is raised in an environment of science, knowledge, and rationality. Upon discovering the wizarding world, he prepares to turn it upside down with his keen intellect.